studentA = {'Tom', 'Jim', 'Mary', 'Tomy', 'Jack', 'Rose'}
studentB = {'Tom2', 'Jiem', 'Mary', 'Taom', 'Jack', 'Rose'}

print(studentA)
# print(studentA + studentB)
print(studentA - studentB)
print(studentA | studentB)
print(studentA & studentB)
print(studentA ^ studentB)

my_set = set(('apple','pear','banner'))
my_set.update({'asdfiban'})
print(my_set)